If you’re referring to Session Relevance Tester in BigFix Labs, that is not a supported tool, and could well be affected by the security updates/enhancements in v11. We generally recommend leveraging our APIs, but perhaps you could provide us with a bit more information on what you’re trying to achieve? You mention converting session relevance into HTML? Are you trying to output some kind of report, and if so, what sort of data, and what formats are desired?